Finding the Fourth Proportional to 4,145.31, 5,714.04 and 2,816.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,145.31 : 5,714.04 = 2,816.71 : x
2. Step 2: Convert to fraction form
   4,145.31/5,714.04 = 2,816.71/x
3. Step 3: Cross multiply
   4,145.31x = 5,714.04 × 2,816.71
4. Step 4: Simplify right side
   4,145.31x = 16,094,789.89
5. Step 5: Solve for x
   x = 16,094,789.89/4,145.31
6. Step 6: Final answer
   x = 3,882.65